22221502 has 8 divisors (see below), whose sum is σ = 33353712. Its totient is φ = 11103600.

The previous prime is 22221491. The next prime is 22221517. The reversal of 22221502 is 20512222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×22221502² = 987590302272008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2127 + ... + 6997.

It is an arithmetic number, because the mean of its divisors is an integer number (4169214).

Almost surely, 2^22221502 is an apocalyptic number.

22221502 is a deficient number, since it is larger than the sum of its proper divisors (11132210).

22221502 is a wasteful number, since it uses less digits than its factorization.

22221502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7154.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 22221502 is about 4713.9688161888. The cubic root of 22221502 is about 281.1411844397.

Adding to 22221502 its reverse (20512222), we get a palindrome (42733724).

The spelling of 22221502 in words is "twenty-two million, two hundred twenty-one thousand, five hundred two".